## Unstructured, Structured, and Semistructured

### Structured

Structued data is information with a predefined organizational system.

| Name      | Date of Birth   |
| --------- | --------------- |
| Johnathon | July 20, 1990   |
| Synthia   | August 17, 2000 |

### Unstructured

Unstructured data is information without a predefined organizational system. It is the most widespread form of data, with examples being video, audio, articles, etc.

> All three major US stock markets closed down in their worst day since 
> June 2020, during the Covid pandemic. The tech-heavy Nasdaq fell 6%, 
> while the S&P 500 and the Dow dropped 4.8% and 3.9%, respectively. 
> Apple and Nvidia, two of the US’s largest companies by market value, had lost a combined $470bn in value by midday.
> 
> [Aratani, Lauren. “US Stock Markets See Worst Day since Covid Pandemic after Investors Shaken by Trump Tariffs.” *The Guardian*, April 3, 2025, sec. US news.](https://www.theguardian.com/us-news/2025/apr/03/trump-tariffs-stock-market)

### 

### Semistructured

Semistructured is a mix of unstructured and structured data.

```
{
"Movie": "A Minecraft Movie",
"Rating": "April 3, 2025",
"Author": "David Fear"
"Details": "We just don’t want to be the one to inform God what his creations hath wrought with this expensively cheap, 100-percent corporate mess."
}


“A Minecraft Movie | Rotten Tomatoes.” Accessed April 3, 2025. https://www.rottentomatoes.com/m/a_minecraft_movie.
```

In this  section of data the Movie, Rating, and Author follow a predefined organization system. However, the "Details" section includes unstructured information.

## Data Pipeline

1. Acquisition

2. Cleansing

3. Transformation

4. Analysis

5. Storage

## Additional Citations

(also good additional resources/references)

________

Vasiliev, Yuli. *Python for data science: A hands-on introduction*. San Francisco: No Starch Press, 2022.
